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A ladder 5 m long leans against a vertical wall. The bottom of the ladder is 3 m from the wall. If the bottom of the ladder is pulled 1 m farther from the wall, how much does the top of the ladder slide down the wall

Options

  1. A1 m
  2. B4 m
  3. C2   m
  4. D3 m

Correct answer

A. 1 m

Step-by-step solution

From first case From second case, ⇒ A B = 4 m and B D = 3 m ∴ A D = 4 - 3 = 1 m

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